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Finding the Fourth Proportional to 445,907.80, 668,931.24 and 146,320.18

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Solution

The fourth proportional to 445,907.80, 668,931.24 and 146,320.18 is: 219,503.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,907.80 : 668,931.24 = 146,320.18 : x
  2. Step 2: Convert to fraction form
    445,907.80/668,931.24 = 146,320.18/x
  3. Step 3: Cross multiply
    445,907.80x = 668,931.24 × 146,320.18
  4. Step 4: Simplify right side
    445,907.80x = 97,878,139,444.42
  5. Step 5: Solve for x
    x = 97,878,139,444.42/445,907.80
  6. Step 6: Final answer
    x = 219,503.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.